Pressure reduction starting device of hydraulic piston type hydrogen compressor

Abstract

The utility model provides a decompression starting device of a hydraulic piston type hydrogen compressor, and belongs to the field of air compressors. The problem that the motor load is large when the compressor is started is solved. The device comprises a shell connected with a compressor; the valve element is arranged in the shell and communicates with the inner space of the shell and the inner space of the compressor, an exhaust assembly is arranged at the end of the valve element, and an air outlet is formed in the side face of the valve element; the piston is arranged between the valve element and the shell in a sliding mode and divides the inner space of the shell into two parts, and the air outlet communicates with the spaces on the two sides of the piston; one end of the elastic assembly is connected with the piston, and the other end is connected with the cover. The method is mainly used for low-pressure starting of the compressor.

Description

Technical Field

[0001] This utility model belongs to the field of air compressors, and in particular relates to a pressure reducing and starting device for a hydraulic piston hydrogen compressor. Background Technology

[0002] The main structure of a reciprocating compressor includes a cylinder, piston, connecting rod, crankshaft, valves, cooling system, and lubrication system. The cylinder is the working space for compressing gas; the piston reciprocates within the cylinder and is connected to the crankshaft via the connecting rod, converting the crankshaft's rotational motion into the piston's reciprocating motion. The valves control the entry and exit of gas, ensuring orderly gas flow during intake, compression, and exhaust processes.

[0003] When a reciprocating compressor starts, its internal space is closed, and the starting load is large. As a result, the motor that drives the compressor draws a large current and consumes a lot of energy during startup.

[0004] In summary, a pressure-reducing start-up device for a hydraulic piston-type hydrogen compressor is proposed. Utility Model Content

[0005] In view of this, the present invention aims to propose a hydraulic piston-type hydrogen compressor pressure reduction and starting device to solve the problem of high motor load during compressor startup.

[0006] To achieve the above objectives, this utility model adopts the following technical solution to provide a hydraulic piston-type hydrogen compressor pressure reduction and start-up device, comprising:

[0007] The casing is connected to the compressor;

[0008] A valve core is disposed inside the housing, connecting the internal space of the housing with the internal space of the compressor. An exhaust assembly is provided at the end of the valve core, and an air outlet is provided on the side of the valve core.

[0009] The piston is slidably positioned between the valve core and the housing, dividing the internal space of the housing into two parts, with the air outlet connecting the spaces on both sides of the piston.

[0010] The flexible component is connected to the piston at one end and to the cover at the other end.

[0011] Furthermore, the valve core has an air inlet along the axis and an air outlet along the radial direction, with the air inlet and the air outlet connected together.

[0012] Furthermore, the air outlet is elongated along the valve core axis.

[0013] Furthermore, the air outlet opening is triangular in shape, with one side of the triangle perpendicular to the valve core axis near the air inlet.

[0014] Furthermore, the exhaust assembly includes an exhaust piston and an exhaust groove, the exhaust piston slides in the exhaust groove, the exhaust groove has an axial groove near the air inlet, and the exhaust piston is connected to an electromagnetic switch.

[0015] Furthermore, the exhaust groove is provided with a blocking cover in the direction away from the air inlet to prevent the exhaust piston from moving outward.

[0016] Furthermore, the valve core body is cylindrical.

[0017] Furthermore, a blocking block is provided on the side of the body to prevent the piston from moving downward.

[0018] Furthermore, the lower part of the housing is provided with a connection port for connecting to a compressor.

[0019] Furthermore, a low-pressure exhaust port for venting is provided on the side of the housing.

[0020] Beneficial effects: The opening and closing of the air outlet on the valve core is controlled by the piston, and the speed of piston movement is controlled by the spring. When the compressor starts, the internal air pressure is reduced, and the load during startup is reduced. Attached Figure Description

[0021] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0022] Figure 1 This is a schematic diagram of the overall structure of the hydraulic piston hydrogen compressor pressure reduction and start-up device described in this utility model;

[0023] Figure 2 This is a schematic diagram of the internal structure of the hydraulic piston hydrogen compressor pressure reducing and starting device described in this utility model;

[0024] Figure 3 This is a cross-sectional view of a hydraulic piston-type hydrogen compressor pressure reduction and start-up device according to the present invention;

[0025] Figure 4 This is a schematic diagram of the valve core described in this utility model;

[0026] Figure 5 This is a cross-sectional view of the valve core described in this utility model;

[0027] Figure 6 for Figure 5 Enlarged view of part A in the middle.

[0028] In the diagram: 1. Housing; 1-1. Low-pressure outlet; 1-2. Connection port; 1-3. Connection seat; 2. Valve core; 2-1. Body; 2-2. Inlet; 2-3. Blocking block; 2-4. Blocking cover; 2-5. Exhaust piston; 2-6. Outlet; 2-7. Exhaust groove; 3. Elastic component; 4. Piston; 5. Electromagnetic switch; 6. Cover; 7. Bracket. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present utility model can be combined with each other, and the described embodiments are only some embodiments of the present utility model, not all embodiments.

[0030] It should be noted that the descriptions of "left," "right," "left side," "right side," "upper part," "lower part," "top," and "bottom" in this utility model are defined based on the orientation or positional relationships shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and are not intended to indicate or imply that the described structure must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0031] In the description of this utility model, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Specific implementation method one:

[0033] Referring to the accompanying drawings, this embodiment provides a hydraulic reciprocating hydrogen compressor pressure reduction and start-up device, comprising:

[0034] Housing 1 is connected to the compressor; the connection ports 1-2 at the bottom of housing 1 are connected to the compressor, so that the internal space of housing 1 is connected to the internal space of the compressor.

[0035] Valve core 2 is located inside the housing 1, connecting the internal space of housing 1 with the internal space of compressor. The end of valve core 2 is provided with an exhaust component, and the side of valve core 2 is provided with an exhaust port 2-6. Valve core 2 is connected to connecting seat 1-3 inside housing 1, and connecting seat 1-3 is connected to connecting port 1-2, extending the communication space and changing the communication direction.

[0036] Piston 4 is slidably positioned between valve core 2 and housing 1, dividing the internal space of housing 1 into two parts. Air outlet 2-6 connects the spaces on both sides of piston 4. Piston 4 slides along valve core 2, which can change the opening and closing of air outlet 2-6.

[0037] The elastic component 3 is connected to the piston 4 at one end and to the cover 6 at the other end. The elastic component 3 can push the piston 4 back to its original position.

[0038] When the air compressor starts, gas enters the housing 1 through the connection port 1-2, and then enters both sides of the piston 4 through the air outlet 2-6 provided on the side of the valve core 2, pushing the piston 4 to move away from the connection port 1-2, compressing the elastic component 3. The elastic component 3 is preferably a spring, which can provide resistance and slow down the movement of the piston 4, so that the gas inside the air compressor is discharged into the space above the piston 4 through the air outlet 2-6. The gas above the piston 4 is discharged through the low-pressure air outlet 1-1 provided on the housing 1. As the piston 4 moves, the air outlet 2-6 will be completely in the lower space of the piston.

[0039] When the air compressor stops, the exhaust assembly opens, and the gas at the bottom of piston 4 enters the valve core 2 through the outlet 2-6 and is then discharged through the exhaust assembly. At this time, the pressure in the space below piston 4 gradually decreases. Under the action of the spring, piston 4 moves downward, so that outlet 2-6 connects the upper and lower sides of piston 4.

[0040] In this embodiment, the valve core 2 has an air inlet 2-2 along its axial direction and an air outlet 2-6 along its radial direction. The air inlet 2-2 is connected to the air outlet 2-6. Gas enters the valve core 2 through the air inlet 2-2 and then enters the upper and lower sides of the piston 4 through the air outlet 2-6.

[0041] In this embodiment, the air outlet 2-6 is elongated along the axis of the valve core 2. When the piston 4 moves, the air outlet 2-6 can ensure that there is gas on both sides of the piston 4, slowing down the movement speed of the piston 4, thereby providing a period of time for the air compressor to depressurize and start.

[0042] In this embodiment, the air outlet 2-6 has a triangular opening shape, with one side of the triangle closest to the air inlet 2-2 perpendicular to the axis of the valve core 2. The lower opening of the piston 4 has a larger width, resulting in a decrease in air velocity and an increase in pressure during air intake. In the upper space of the piston 4, the opening of the air inlet 2-2 has a smaller width, resulting in an increase in air velocity and a decrease in pressure during air intake. A pressure difference exists between the upper and lower parts of the piston 4, which overcomes the spring force and pushes the piston 4 upward.

[0043] In this embodiment, the exhaust assembly includes an exhaust piston 2-5 and an exhaust groove 2-7. The exhaust piston 2-5 slides in the exhaust groove 2-7, and the exhaust groove 2-7 has an axial groove near the air inlet 2-2. The exhaust piston 2-5 is connected to an electromagnetic switch 5. Under the control of the electromagnetic switch 5, the exhaust piston 2-5 moves downward to the position of the exhaust groove 2-7, connecting the internal space of the valve core 2 with the external space of the housing 1 to perform the venting and reset process. The bracket 7 is used to support the electromagnetic switch 5.

[0044] In this embodiment, the exhaust groove 2-7 is provided with a blocking cover 2-4 in the direction away from the air inlet 2-2, which is used to prevent the exhaust piston 2-5 from moving outward. The blocking cover 2-4 can hold the piston 4 in place, restrict the position of the piston 4, and reduce the force of gas pressure on the electromagnetic switch 5.

[0045] In this embodiment, the body 2-1 of the valve core 2 is cylindrical. The cylindrical shape of the valve core 2 facilitates the sealing between the piston 4 and the body 2-1.

[0046] In this embodiment, the main body 2-1 has a rearward blocking block 2-3 on its side, which prevents the piston 4 from moving downward. The blocking block 2-3 is used to limit the position of the piston 4 and keep the air outlet 2-6 always connected to the lower space of the piston 4.

[0047] In this embodiment, the lower part of the housing 1 is provided with a connection port 1-2 for connecting to a compressor. The connection port 1-2 is used to connect to an air compressor, preferably by a threaded connection.

[0048] In this embodiment, a low-pressure exhaust port 1-1 is provided on the side of the housing 1 for exhausting gas. The low-pressure exhaust port 1-1 is located on the side of the housing 1 and is connected to the upper space of the piston 4 to exhaust gas from the upper space of the piston.

[0049] The embodiments of the present invention disclosed above are merely illustrative of the present invention. The embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific implementations described. Many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention.

Claims

1. A hydraulic piston-type hydrogen compressor pressure-reducing start-up device, characterized in that, include: The housing (1) is connected to the compressor; The valve core (2) is located inside the housing (1) and connects the internal space of the housing (1) with the internal space of the compressor. The valve core (2) is provided with an exhaust assembly at its end and an air outlet (2-6) on its side. The piston (4) is slidably positioned between the valve core (2) and the housing (1), dividing the internal space of the housing (1) into two parts, and the air outlet (2-6) connects the spaces on both sides of the piston (4); The elastic component (3) is connected to the piston (4) at one end and to the cover (6) at the other end.

2. The hydraulic piston-type hydrogen compressor pressure reduction and start-up device according to claim 1, characterized in that: The valve core (2) has an air inlet (2-2) along the axis and an air outlet (2-6) along the radial direction. The air inlet (2-2) is connected to the air outlet (2-6).

3. The hydraulic piston-type hydrogen compressor pressure reduction and start-up device according to claim 2, characterized in that: The air outlet (2-6) is elongated along the axis of the valve core (2).

4. The hydraulic piston-type hydrogen compressor pressure reduction and start-up device according to claim 3, characterized in that: The air outlet (2-6) has a triangular shape, with one side of the triangle closest to the air inlet (2-2) perpendicular to the axis of the valve core (2).

5. The hydraulic piston-type hydrogen compressor pressure reduction and start-up device according to claim 1, characterized in that: The exhaust assembly includes an exhaust piston (2-5) and an exhaust groove (2-7). The exhaust piston (2-5) slides in the exhaust groove (2-7). The exhaust groove (2-7) has an axial groove in the direction near the air inlet (2-2). The exhaust piston (2-5) is connected to an electromagnetic switch (5).

6. The hydraulic piston-type hydrogen compressor pressure reduction and start-up device according to claim 5, characterized in that: The exhaust groove (2-7) is provided with a blocking cover (2-4) in the direction away from the air inlet (2-2) to prevent the exhaust piston (2-5) from moving outward.

7. The hydraulic piston-type hydrogen compressor pressure reduction and start-up device according to claim 1, characterized in that: The valve core (2) has a cylindrical body (2-1).

8. The hydraulic piston-type hydrogen compressor pressure-reducing start device according to claim 7, characterized in that: The main body (2-1) has a blocking block (2-3) on its side, which blocks the piston (4) from moving downward.

9. The hydraulic piston-type hydrogen compressor pressure reduction and start-up device according to claim 1, characterized in that: The lower part of the housing (1) is provided with a connection port (1-2) for connecting to the compressor.

10. The hydraulic piston-type hydrogen compressor pressure reduction and start-up device according to claim 1, characterized in that: The housing (1) has a low-pressure exhaust port (1-1) on its side for exhausting air.

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